Method of making wing nuts



06L 2]., 1952 MOORE 2,614,274

METHOD OF MAKING WING NUTS Filed D60. 8, 1948 {0 5% 4 I] O m 5 fig A 1 A I .2? 7p {0 Id 12 W 1 Patented Oct. 21, 1952 UNITED STATES PATENT, OFFICE v 2,614,274 4 7 1 1 METHOD or. MAKING WING NUTS Harrington Moore, Medford, Mass Application December 8, 1948, Serial-No. 64,091

2 Claims. 1

This invention. relates. to. methods of making wing nuts, these methods being'characterized by operations on rod or bar stock of malleable metal such as soft steel, whereby wingnuts can be rapidly and economically produced from such stock.

According to the invention, successive portions of a piece of stock are flattened to form the wings and the intermediate body portion of a wing nut, the body portion being drilled or punched and the resulting hole tapped, the wings being suitably trimmed and bent into'desired relationship with the body portion.

For a more complete understanding of the invention, reference may be had to the followin description thereof and to the drawing, of which Figure 1 is a perspective view of a piece of round bar stock;

Figures 2 and 3 are sections of square and oval bar stock;

Figure 4 is a plan view of a piece of stock showing a progressive series of operations;

Figure 5 is an elevational view of a portion of the stock shown in Figure 4, a part being broken away to show in section;

Figure 6 is a section on the line 6-6 of Figure 4;

Figure 7 is a section on the line 'l! of Figure 4;

Figure 8 is a side elevation of a finished wing.

nut;

Figure 9 is an end elevation of the same; Figure 10 is an elevation of partly worked stock illustrating a modified method of making wing nuts, a, portion being broken away to show in section;

Figure 11 is an elevation of another modification;

Figure 12 is a plan view of stock showing the initial steps of another modification of the method;

Figure 13 is a plan view of a partly finished wing nut resulting from the method illustrated in Figure 12;

Figure 14 is a section on the line 3-14 of Figure 13; and

Figure 15 is an elevation of a finished nut resulting from the work piece shown in Figures 13 and 14.

According to the invention, wing nuts are made from rod or bar stock, such as the stock 20 shown in Figure 1, this stock having a circular crosssection. Other cross-sections, such as the square stock 22 shown in Figure 2, the oval stock 24 shown in Figure 3, or any other shape, can be employed also in a, similar manner Thestock is of malleable material suchas soft steel, [and successive portions thereof are flattened by blows from apower hammer or die, alternate flattened portions beingv preferably in planes which are at right angles to each other, For example, Figure 4 illustrates a piece of rock stock 20,; the leading part of which has been operated on. in successive steps. The first step flattens; a portion of the rod, as at 30'. In this example,'this'portion 30 is flattened by means of a die havingra recess into which some of the metal flows to form a boss 32. The adjacent portions of the stock on either side of the flattened portion 30 are flattened in a plane at right angles to the plane of the portion 30, as at 34. The flats 34 may be of uniform thickness, or, as indicated in Figure 4, may taper in thickness from the points of junction with the adjacent flats 30 to the transverse medians 36. The boss 32 is punched or drilled to form a hole 38, which is subsequently tapped so as to be internally threaded, as indicated at 4B. The end portion of the stock is then cut ofl at the nearest median line 36, as indicated in Figure 5, the cut ends being at the same time trimmed, as shown at 42, to form semicircular extremities. The cut-off piece thus consists of a central flat 30 with attached end flats 44 in a plane at right angles to the plane of the flat 30, two such end flats being cut from each flat 34. The end flats are thereupon bent upward from the plane of the bottom of the flat 39 to the positions shown in Figure 8, these bent-up flats forming the wings of the nut.

A modified form of the invention is shown in Figure 10. According to this modification, the central flat 30 is thicker than the flat 30 shown in Figure 4, this thicker flat being adapted to be punched or drilled to form a hole long enough for the required number of turns of a screw thread. Between successive flats 30' are intermediate flats 34 the plane of which is at right angles to the plane of the flats 30. These intermediate flats are adapted to be cut in two and trimmed to form wings 44 which can be bent up, as heretofore described.

A second modification is illustrated in Figure 11. The stock shown in this figure is flattened to form successive flats of substantially the same size, in planes which are alternately at right angles to each other. In each third flat is formed a boss 52 to provide additional thickness for a screw thread. The boss 52 may be raised by the die in the operation of flattening these portions of the stock, or the boss may be struck up in the process of punching a hole through the flat. In either case, a hole is formed and is thereafter tapped to form a screw thread. Each of the flats having a threaded hole therethrough in spaced from the next one by two plain flats 50. When pieces are cut from the flattened stock, such cuts come between successive plain flats so that each cut-off piece thus consists of a flat with a threaded hole therethrough flanked by a plain flat at each end. The latter are bent up out of the plane of the bottom of the middle flat, as described, to finish the wing nut.

Another modification is illustrated in Figures 12 to 15. The rod stock 20 is flattened over a predetermined length, as at 60, and a boss 62 is simultaneously formed at the middle of the flattened portion. A central hole 64 is then punched or drilled through the boss 62. In the next operation the flat is severed from the stock and its side edges are trimmed away, as indicated at 66 in Figure 12, to form round end portions. The opposing segments of each end portion are then bent up to form channels, as at 68. Thereafter, the channeled end flats are each bent up, as shown in Figure 15, above the bottom plane of the boss 52, thus completing the wing nut.

I claim:

1. A method of making wing nuts, which comprises flattening successive portions of rod or bar stock and simultaneously forming a central 4 boss on each of some of said flats, forming a threaded hole through each said boss, shaping the flats on either side of the boss into wings, and bending the wings up above the plane of the bottom of the boss.

2. A method of making wing nuts, which comprises flattening successive portions of rod or bar stock to form flats in alternately horizontal and vertical planes, raising a central boss on each of the horizontal flats in the process of flattening, forming each vertical flat with a thickness which tapers from each end to a minimum at its transverse median, forming a threaded hole through each boss, cutting the vertical flats on each said median to sever successive pieces from the stock, and bending vertical flat portions at either end of the horizontal flat of each piece up above the plane of said horizontal flat.

HARRINGTON MOORE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 204,149 Heckmann May 28, 1878 1,773,146 Kellogg Aug. 19, 1930 1,982,054 Hogue Nov. 27, 1934 2,002,671 McLaughlin May 28, 1935 2,238,822 Priest Apr. 15, 1941 

